Objective:To analyze the effects of different concentrations of polyethylene glycol 6000(PEG-6000)solution on 4 germination indexes(germination rate

germination potential

germination index and vitality index)of artificially induced aging seeds of Polygala tenuifolia

and clarify the aging rule of P. tenuifolia seeds during storage and the effects of PEG initiation treatment on the aging seeds. Method:Artificial aging of P. tenuifolia seeds was simulated under the air tight conditions at high temperature(45±1)℃

high humidity(100% relative humidity)

and then the aging seeds were treated in 10%

20% and 30% PEG-6000. Result:With the extension of aging treatment time

the above 4 germination indexes of P. tenuifolia seeds showed a gradually decreasing trend

and the seeds with more than 60 h aging time were not germinated;20% PEG 6000 solution had a promoting effect on the germination indexes of the aging P. tenuifolia seeds

close to the normal seed germination indexes. 10% PEG and 30% PEG also had certain priming effect

but the priming effect was not very good. 20% PEG-6000 solution promoted the plant height

root length

above-ground biomass biomass

and below-ground biomass growth of 36 h P. tenuifolia seeds. Conclusion:This study showed that the PEG-6000 solution with different concentrations had certain repair effects on the aging P. tenuifolia seeds

and improved the seeds vigor

but the suitable concentration was different because of the different aging time of the seeds

providing basic data for the application of seed priming technology to the storage of P. tenuifolia seeds.